Strontium Statistics and Information

Strontium commonly occurs in nature, averaging 0.034% of
all igneous rock; only two minerals, celestite (strontium sulfate)
and strontianite (strontium carbonate), however, contain
strontium in sufficient quantities to make its recovery practical.
Of the two, celestite occurs much more frequently in
sedimentary deposits of sufficient size to make development of
mining facilities attractive. Strontianite would be the more
useful of the two common minerals because strontium is used
most often in the carbonate form, but few deposits have been
discovered that are suitable for development.